If Mitt Romney, America’s Republican presidential candidate, doubted London’s preparedness for the 2012 Olympics, what must he think about Brazil’s? The 2016 Olympics and 2014 football World Cup will happen in a country where only 14% of roads are paved. The World Economic Forum ranks Brazil’s quality of infrastructure 104th out of 142 countries surveyed, behind China (69th), India (86th) and Russia (100th). On a recent visit to Santos, Brazil’s largest port, your correspondent watched men clean up the remains of a ship that had exploded carrying chemicals—in the 1970s.